Measurement of Hydrolysis Species of U(VI) by Time-Resolved Laser Induced Fluorescence Spectroscopy

Akira Kitamura, Tomoo Yamamura, Hirotomo Hase, Tadashi Yamamoto, Hirotake Moriyama

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


A time-resolved laser induced fluorescence spectroscopic method was applied to the measurement of uranyl hydrolysis complexes in highly basic solutions. The emission spectra and the decay curves of the hydrolysis species in highly basic solutions were hardly observed at ambient temperature, but at 77 K, those of UO2(OH)3- and UO2(OH)42- were successfully measured. The emission spectrum of the hydrolysis species was observed to shift to longer wavelengths and the vibrational frequency of the uranyl ions was observed to decrease, successively with increasing number of coordinated hydroxyl groups. The O=U=O bond strength of the uranyl ions was discussed, and the vibration of O=U=O bond was observed to be weakened by coordination with hydroxyl groups.

Original languageEnglish
Pages (from-to)147-152
Number of pages6
JournalRadiochimica Acta
Issue number1
Publication statusPublished - 1998


  • Emission spectrum
  • Frozen media
  • Highly basic solution
  • Hydrolysis
  • Time-resolved laser induced fluorescence spectroscopy
  • Uranium(VI)

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry


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